15005421432 has 48 divisors (see below), whose sum is σ = 40655160000. Its totient is φ = 4999902336.

The previous prime is 15005421407. The next prime is 15005421451. The reversal of 15005421432 is 23412450051.

It is a junction number, because it is equal to n+sod(n) for n = 15005421396 and 15005421405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157444 + ... + 234092.

It is an arithmetic number, because the mean of its divisors is an integer number (846982500).

Almost surely, 2^15005421432 is an apocalyptic number.

15005421432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15005421432 is an abundant number, since it is smaller than the sum of its proper divisors (25649738568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15005421432 is a wasteful number, since it uses less digits than its factorization.

15005421432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79380 (or 79373 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 15005421432 its reverse (23412450051), we get a palindrome (38417871483).

The spelling of 15005421432 in words is "fifteen billion, five million, four hundred twenty-one thousand, four hundred thirty-two".